Repository navigation

Add BenchmarkUtils.warmUp to restore cross-arm branch profiles in benchmarks (perf toolkit - benchmarking tools) - #12651

Draft

dougqh wants to merge 58 commits into

masterfrom

dougqh/benchmarkutils-warmup-arms

Draft

Add BenchmarkUtils.warmUp to restore cross-arm branch profiles in benchmarks (perf toolkit - benchmarking tools)#12651
dougqh wants to merge 58 commits into
masterfrom
dougqh/benchmarkutils-warmup-arms

Commits on Sep 22, 2026
- Add EmbeddingSupport.contains(hashes, names, name) helper
  
  dougqh
  and
  claude
  authored
  98b34e3
- Add hitFresh scenario and hash-dispatch pollution to ImmutableSetBenchmark
  
  dougqh
  and
  claude
  authored
  a440151
- Restructure StringIndex put/indexOf around a single induction variable
  dougqh
  authored
  ae7207a
- Split BenchmarkUtils type-profile pollution into add-driving and contains-only helpers
  dougqh
  authored
  69e5509
- Scope StringIndex-as-Set guidance to hit-dominated access patterns
  dougqh
  authored
  cccabcd
- Pollute type dispatch in ImmutableMapBenchmark and refresh results
  dougqh
  authored
  1efce43
- Tighten benchmark javadoc wording per review
  
  dougqh
  and
  claude
  authored
  786bd68
- Extend BenchmarkUtils with ConcurrentHashMap and Map-dispatch pollution
  dougqh
  committed
  b5e9007
- Wire BenchmarkUtils.polluteHashDispatch into the remaining map/set benchmarks
  dougqh
  committed
  f2b6e86
- Record pollution-corrected results in SingleThreadedMapBenchmark
  dougqh
  committed
  dd3eba5
- Record pollution-corrected results in SingleThreadedSetBenchmark
  dougqh
  committed
  8c60545
- Record pollution rerun results in HashtableD1Benchmark
  dougqh
  committed
  0aea116
- Record pollution rerun results in HashtableD2Benchmark
  dougqh
  committed
  fe50efd
- Record pollution rerun results in CaseInsensitiveMapBenchmark
  dougqh
  committed
  b683585
- Record pollution rerun results in TagMapAccessBenchmark
  dougqh
  committed
  c514c05
- Correct HashtableD1Benchmark's pollution-immunity rationale
  dougqh
  committed
  6749897
- Correct HashtableD2Benchmark's pollution-immunity rationale
  dougqh
  committed
  35c3591
- Attribute CaseInsensitiveMapBenchmark's rerun slowdown to JDK 8 on ARM64
  dougqh
  committed
  f6e3ca8
- Attribute TagMapAccessBenchmark's rerun slowdown to JDK 8 on ARM64
  dougqh
  committed
  e6175c5
- Record Java 17 rerun for HashtableD1Benchmark
  dougqh
  committed
  7f9fbf1
- Record Java 17 rerun for HashtableD2Benchmark
  dougqh
  committed
  7f6889d
- Address bot review findings on benchmark pollution helper and javadoc
  dougqh
  committed
  3d9b93a
- Record JDK 8 rerun results with fixed pollution helper for ThreadSafeMap benchmarks
  
  dougqh
  and
  claude
  committed
  56a31d9
- Replace JDK 8 rerun with clean same-JDK pollution comparison
  
  dougqh
  and
  claude
  committed
  acd9bd0
Commits on Sep 23, 2026
- Pollute compareTo and MapN dispatch in BenchmarkUtils
  
  dougqh
  and
  claude
  committed
  ecbdd4f
- Add a perf-review rubric check for Map/Set JMH benchmark dispatch pollution
  
  dougqh
  and
  claude
  committed
  2c0117e
- Merge remote-tracking branch 'origin/master' into dougqh/benchmarkutils-map-set-pollution
  dougqh
  committed
  30c5de2
- Re-pollute hash/compareTo dispatch every invocation, not once per trial
  
  dougqh
  and
  claude
  committed
  71a383e
Commits on Sep 25, 2026
- Merge remote-tracking branch 'origin/master' into dougqh/benchmarkutils-map-set-pollution
  dougqh
  committed
  b1c09ce
- Simplify pollution warm-up to a single scratch-free entry point
  
  dougqh
  and
  claude
  committed
  74435ac
- Merge remote-tracking branch 'origin/dougqh/benchmarkutils-map-set-pollution' into dougqh/benchmarkutils-map-set-pollution
  dougqh
  committed
  67516de
- Correct benchmark dispatch claims and measure allocation directly
  
  dougqh
  and
  claude
  committed
  165dfc0
- Correct the Object decoy's contribution in distinctEqualCopy javadoc
  
  dougqh
  and
  claude
  committed
  3878379
- Attribute the synchronized HashMap gap to lock contention, not dispatch
  
  dougqh
  and
  claude
  committed
  99ca351
- Refresh benchmark tables from a -prof gc run and retract stale claims
  
  dougqh
  and
  claude
  committed
  19c00ff
- Document the branch-profile / escape-analysis interaction
  
  dougqh
  and
  claude
  committed
  492066b
- Reframe BenchmarkUtils around fork isolation as the root cause
  
  dougqh
  and
  claude
  committed
  1ce8fec
- Fix perf-review J12 check and clean up pollution-migration leftovers
  
  dougqh
  and
  claude
  committed
  59c58eb
- Run hash-dispatch pollution once per JVM instead of once per thread
  
  dougqh
  and
  claude
  committed
  754a5ed
Commits on Sep 28, 2026
- Refresh tables from the once-per-JVM run and rule out setup-allocation churn
  
  dougqh
  and
  claude
  committed
  d6c6284
Commits on Oct 6, 2026
- Correct dispatch and API claims in benchmark javadocs
  
  dougqh
  and
  claude
  committed
  49a25ac
- Narrow HashtableD1Benchmark's setup-allocation finding
  
  dougqh
  and
  claude
  committed
  7adb401
- Seed CaseInsensitiveMapBenchmark's lookup keys and refresh results
  
  dougqh
  and
  claude
  committed
  f41429c
- Merge remote-tracking branch 'origin/master' into dougqh/benchmarkutils-map-set-pollution
  dougqh
  committed
  45cede4
- Attribute HashtableD1Benchmark's update ratio to the collector, not the JDK
  
  dougqh
  and
  claude
  committed
  8493096
- Refresh CaseInsensitiveMapBenchmark on the merged CHA-decoy code
  
  dougqh
  and
  claude
  committed
  a74b563
- Add BenchmarkUtils.warmUpArms to restore cross-arm profile pollution
  
  dougqh
  and
  claude
  committed
  184fbfd
- Rename Arm/arm/warmUpArms to Bench/bench/warmUp, collapse to boxing-tolerant overloads
  
  dougqh
  and
  claude
  committed
  c7b01bf
- Add WarmUpEscapeAnalysisDemoBenchmark as evidence that BenchmarkUtils.warmUp works
  
  dougqh
  and
  claude
  committed
  ec7bfa7
- Correct BenchmarkUtils.warmUp and demo benchmark javadocs
  
  dougqh
  and
  claude
  committed
  bf02bd7
Commits on Oct 8, 2026
- Count superclass @Benchmark methods in warmUp's coverage check
  
  dougqh
  and
  claude
  committed
  325b6f2
- Run the benchmark class's own @Setup in reflective warmUp
  
  dougqh
  and
  claude
  committed
  84615b7
- Reuse datadog.trace.api.function's TriFunction and TriConsumer in warmUp
  
  dougqh
  and
  claude
  committed
  a883d9d
- Drop the demo's scratch keys after warmUp and refresh on JDK 17
  
  dougqh
  and
  claude
  committed
  5c80c7f
Commits on Oct 13, 2026

Commits

Commits on Sep 22, 2026

Commits on Sep 23, 2026

Commits on Sep 25, 2026

Commits on Sep 28, 2026

Commits on Oct 6, 2026

Commits on Oct 8, 2026

Commits on Oct 13, 2026